Lubricating system



April 8, 1930. A. F. GARBARINO LUBRICATING SYSTEM Filed D80. 30 1926 2 Sheets-Sheet l I wave/72207 m M m April 8, 1930. A. F. GARBARINO 1,753,460. LUBRiCATINGY SYSTEM Q I Filed Dec. 30, 1926 2 Shes-Shee t 2 r I I r m 7/ r 17 W InversionflmnicoFaarbantm v bywwwvvwgjs Patented Apr. '8,

UNITED STATES, PATENT OFFICE AMERIGO F. GARBARINO, OF MEDFORD, MASSACHUSETTS, ASSIGNOR, BY vMIESNE -AS- SIGNMEN'I'S, T0 ALEMITE CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION on DELAWARE LUBRICATING SYSTEM Application filed December 30, 1926. Serial No. 157,927. b

This invention aims to provide improve ments in centralized lubricating systems.

In the drawings, which illustrate a preferred embodiment of my invention:

Figure 1 is a general side elevation of the system as attached to a motor vehicle, the motor and dash being shown in dotted lines;

Fig. 2 is a vertical section through the pump and associated means, showing a cup in cross-section and showing the parts in their normal inoperative positions;

Fig. 3 is a section similar to Fig. 2, but showing the parts in operating posit1ons; and

Fig. 4 is aplan section on the line 4-4 of Fig. 2, showing the air port and ball detent means of the valve which alternates the suction and atmospheric pressure in the divided cylinder.

Referring to the embodiment of my invention illustrated by the drawings, I have shown a so-called central lubricating system which is particularly, though not exclusively,

adapted for use in connection with the lubrication of the bearings of' a vehicle chassis.

The system as illustrated in Fig. 1 includes a lubricant reservoir, which in this instance is the crankcase 1 of the motor 2, a vacuum pump device 3, secured to the dash 4 ofthe vehicle, a plurality of charge-determining lubricant cups 5 and means providing a source of suction supply which in this instance is the intake manifold 6 of the motor. Lubricant is pumped to the vacuum pump 3 from the crankcase through the conduit 7 by means of the oil pump 7 of the motor and is forced from the vacuum pump through the pipe system 8 which connects with all of the lubricant cups 5. A conduit 9 provides a by-pa'ss from the system 8 to return lubricant to the crankcase and a conduit 10 connects the manifold 6 with the vacuum pump 3. All-of the pipes or conduits mentioned are controlled bya' single sliding push buttondevice 11 mounted in the base 12 of the vacuum pump device 3, as illustrated in Figs. 2 and 3.

The vacuum pump device 3 and the push button control device 11 are combined to form a single unit which may be mounted back of the dash 4 so that the button 13 may be 7 by means of passages 15 bored into the base 12. The chamber 14 has an outlet passage 16 which connects with the pipe system 8 and also with the bore 17 in which'the sliding device 11 operates. A ball. check valve 18 is located in the passage 16 to prevent return of lubricant to the chamber 14. A piston rod 19 is reciprocable in the chamber 14 for expelling the lubricant therefrom under relatively high pressure. This piston rod is reciprocated by means of two larger pistons 20. and 21 operable in a cylinder 22, which is divided into two sections or compartments 20 and 21 by the wall 23. Both pistons 20 and 21 are attached directly to the piston rod 19. 1

Valvular means is providedin the form of a sliding valve part 23 mounted in the partment 20*, or the port 26 in communicar tion with the compartment 21*.

At one side of the valve part 23, I have provided a bore 27 in the wall 23, which is open to the atmosphere to permit atmospheric pressure to enter either one or the other of said compartments, through the port 25 or the port 26, as shown in Fig.- 4. A spring pressed ball 28 is adapted to engage the annular walls of the ports 25 and 26 to hold the valve in one position or the other until moved by one or the other of the pistons 20 and 21.

The charge-determining cups 5 shown in cross-section in Figs. 2 and 3, are of substane tially the same construction and operate in substantially the same manner as more fully shown and described in the co-pending application of Howard J. Murphy, Serial No. 80,244, filed- January 9th, 1926.. Any other suitable cups may be used, however, and I do not wish to be limited to the use of the particular cups, referred to.

The eration of the device may be as follows. ssuming that the motor of'the vehicle is in operation and that the vacuum ump is idle, the press-button control 11 will be in the position shown in Fig. 2. If now the operator wishes to lubricate the bearings, which are connected by the system, he need merely press the button 13 to move the control into the position shown in Fig. 3.

This action opens the lubricant passage 15 and the suction passage 29 in the base 12,

- while closing the lubricant by-pass passage 30. The spring-pressed ball 31 snaps into the groove 32 in the control device 11 and holds the control in the position shown in Fig. 3, With the pistons 20 and 21 in the positions shown in Fig. 3, the air in the compartment 20 will be drawn by suction through the port 25, passage 24, conduit 10 and passage 29,

ast the old 6. At the same time atmospheric pres- I sure will be admitted to the opposite side of the piston 20, through the port 33, and to the compartment 21 through the bore 27 and port 26, thereby combining to drive the pistons 20 and 21 upwardly in the cylinder 22.

The air in the cylinder above the piston 21 is forced out through the port 34 When the iston 20 contacts with the spring-pressed cap 35 at the lower end of the valve 23*. this cap will be moved relative to the valve, be-

cause of the pin 36 and slot 37 connection until the pin reaches the top end of the slot, when further movement of the piston 20 will shift the valve 23 upwardly until the ball 28 is released from the groove formed by the port 26. The spring 38 between the cap 35 and the main portion of'the valve will then press the valve upwardly until the ball 28 snaps into the groove formed by the port 25, thus automatically shifting the port 25 out of communication with the passage 24while shifting the port 26 into communication with the passage 24. as shown in Fig. 2. Immediately the suction will be applied to the compartment 21 and atmospheric pressure will be admitted to the compartment20 through the passage 27 (Figs. 2 and 4) Air will also be admitted to the-upper side of,the piston 21, to drive both pistons 20 and 21 downwardly, and the air below the piston 20 will exhaust through the port 33.

The cap 39, spring 40, and pin 41 andslot 42 at the upper end of the valve 23 perform similar functions, as do the corresponding parts at the lower end of the valve.

As the pistons 20 and 21 reciprocate, as above described. the piston rod 19 is reciprocated in the chamber 14, thereby taking into the chamber 14 a charge of lubricant, when I time,

control device 11, to the intake mani-.

cup to force a measured quantity of lubricant I from each cup to the parts to be lubricated, as more fully described in he above-mentioned co-pending application. After the lu bricant is discharged'from the cups, the pressure of the lubricant increases until there is sufficient pressure exerted upon the inner end of the device 11 to displace the ball 31 from the groove 32 and, move the part 11 from the position shown in Fig. 3 to that shown in Fig. 2. The ball 31 then snaps into the groove 43. Thus the passage 30 to the by-pass conduit 9 is opened automatically and the lubricant in the cups 5 and pipe system 8 may pass back to the crankcase 1 and permit the charge-determining means in the cups to return to their normal positions. At the same the device 11 automatically cuts oif the supply of lubricant to the chamber 14 and stops the operation of the vacuum, pump defold 6.

From' the above description, taken inconnection with the drawings, it will be readily understood that I have provided a simple, compact, central system which is set in operation by merely pressing a button and is thereafter automatic in operation up to and including the stopping of the operation of the system.

While I have shown and described one embodiment of my invention, I do not wish to be limited thereby as my invention is more fully covered by the following claims.

Claims:

- 1. In a central lubricating system having a lubricant supply and a plurality of parts for receiving lubricant from said supply, a-suction pump device comprising means providing a lubricant chamber of relatively small vice by cutting off the suction from the manicross-section adapted to receive lubricant from the lubricant supply, a piston operable in said chamber, a cylinder aligned with said chamber and divided into two sections, pis tons in each of said sections connected to said first-mentioned piston for operation thereof,

a source of suction supply, a valve device in said cylinder between said sections, said valve device operable by said pistons in said sections to control the admission of the suction and of the atmosphere at one side only of each piston and a push-button control for adsaid cups, and a pipe system connecting the parts of said system, said pump comprising as an assembled unit, means providing a lubricant chamber, a pistonoperablein said chamber, a cylinder divided into two compartments, pistons operable in said compartments, said pistons connected to said firstdetermining lubricant cups adapted to be supplied from said reservoir, a vacuum operated pump for forcing the lubricant to and from said cups, and a pipe system connecting the parts of said system, said pump comprising as an assembled unit, means providing a lubricant chamber, a piston operable in said chamber, a cylinder divided into two compartments, pistons operable in said compartments, said pistons connected to said firstmentioned piston for operation thereof, valvular means within said cylinder for controlling-theadmission of atmosphere and of suction at one side of each of the pistons in said compartments, a push-button device for controlling the main supply of lubricant and of the suction and a by-pass from said pipe'system to the source of lubricant supply, said push-button device operable in one direction by hand to open the suction supply and the oil supply while-closing the by-pass and op-- erable in the opposite direction by the lubricant pressure in the system to open the bypass and relieve the pressure in the system at the same time closing the lubricant supply and suction supply.

4. In a pump and suction operated motor for use in centralized lubricating systems, a

lubricant chamber of relatively small cross sectional area, a piston operable in said chamber to pump lubricant under pressure from said chamber, a cylinder aligned with said chamber and divided into two sections, a piston opera'blein each section, means to rigidly connect the three piston's,'a source of'suction, and a valve in said cylinder between said sections, said valve operable by said pistons in said sections to control the admission of suction and of the atmosphere at one side onlyof each piston.

5. In a pump and suction operated motor for use in centralized lubricating systems, a

4 lubricant chamber of relatively small cross rigidly connect sectional area, a piston operable in said chamber to pump lubricant under pressure from said chamber, a cylinder aligned with said chamber and divided into two sections, a piston operable in each section, means to the three pistons, a source of suction, and a valve interposed between said sections for controlling the motive power for driving the pistons in each of the sections in opposite directions for reciprocating the first mentioned piston in its chamber.

6. In a pump and suction operated motor for use in centralized lubricating systems, a

lubricant chamber of relatively small cross sectional area, a piston operable in said chamber to pump lubricant under pressure from said chamber, a pair of spacedpistons connected to said first mentioned piston, a valve interposed between said spaced pistons for providing communication between the pistons and source of suction, and a control shaft disposed between the valve and source of suction operable to. aflord or cut off communication between the valve and source of suction 7. In a pump and suction operated motor for use in centralized lubricating systems, a

lubricant chamber of relatively small cross sectional area, a piston operable in said chamber to pump lubricant under pressure from said chamber, a cylinder aligned with said chamber and divided into two sections, a piston operable in each section, means to rigidly connect the three pistons, a source of suction, a valve disposed between said sections to afford communication between the sections and source of suction, a control shaft disposed between said valve and said source of suction, manual means for moving said control shaft to a position afiording communication between said valve and source of suction, and means operable by the pressure of the lubricant discharged from the lubricant chaniber to move said control shaft to a position where communication between the chamber and source of suction is cut off.

' 8. In a pump and suction operated motor for use in centralized lubricating systems,

a base, a lubricant chamber of relatively small cross sectional area vertically disposed in said base, a piston operable in said chamber 'to pump lubricant under pressure from said chamber, a horizontally disposed discharge passageway connecting with said chamber and affording escape for the lubricant, a pair of suction operated pistons in alignment withably mounted in said horizontally disposedpassageway and adapted to close or open-the suction passage.

9. In a pump'and suction operated motor for use in centralized lubricating systems, a base, a lubricant chamber ofrelatively small cross sectional area vertically disposed in said base, a piston operable in said chamber to pump lubricant under pressure from said chamber, a horizontally disposed discharge passageway connecting with said chamber" and afiording escape for the lubricant, a pair of suction operated pistons in alignmentwith and connected to said first mentioned 'piston, a source of suction, a vertically disposed suction passagewayin said base between said istons and said source of suction, zontally disposed cylinder in alignment with the aforementioned horizontally disposed discharge passageway and passing through said suction assageway, a control shaft slidably mounted in said cylinder adapted to open the suction passageway when manually slid in one direction, and means operable by the lubricant in the discharge passageway to slide said control shaft in another direction to close the suction passageway.

In testimony whereof I have signed my I name to this specification.

AMERIGO F. GARBARINO.

a hori- 

